[PATCH] fix a logic bug in x86 vector codegen: sext (zext (x) ) != sext (x) (PR20472)

Sanjay Patel spatel at rotateright.com
Thu Aug 28 10:48:44 PDT 2014

Ping 2.

This is a miscompile that apparently occurs in the wild. 

Easy review - the fix doesn't add any lines of code other than comments. :)


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